Drying apparatus.



C. H. BENEDICT. DRYING APPARATUS. APPLICATION FILED APR. 17. 1916.

Patented Apr. 3,1917.

6 SHEETSSHECT 1 INVENTQR TTUR'NEYEI C. H. BENEDICT.

DRYING APPARATUS.

APPLICATION FILED APR. I7. 1916- LQJQQW A Patented Apr. 3,1917.

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C. H. BENEDICT.

DRYING APPARATUS. I APPLICATION FILED APR. 11, 1916.

Patented Apr. 3,1917.

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C. H. BENEDICT.

DRYING APPARATUS.

APPLICATION FILED APR. 17. 1916.

Patented Apr. 3,1917.

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DRYING APPARATUS.

APPLICATION FILED APR- 17 1916- Patented Apr. 3

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ATTUFWK C. H. BENEDICT.

DRYING APPARATUS.

APPLICATION FILED APR. H. 1916.

Patented Apr.- 3, 1917.

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- )M/EA/ TUF? tilt tLES H. BENEIUTCT, OF CHICAGO, ILLINGIS I narrate r arcs.

a manufacturing establishment for drying articles produced therein and has particular application in the manufacture of enamel ware- The invention is further designed to provide a drier in which the air is driven through the drying chamber in an opposite directlon from the material which is carried through the chamber.

The invention is further designed to pro- I vide a drier in the form of a pit in which the material to be dried is moved lengthwise thereof against the air passed through the pit and in which the bottom and sides of the pit are heated bythe waste heat from products of combustion passin from the furnace through a flue beneath an around the pit to the chimney.

The invention further consists in the several features hereinafter set forth and more particular]? defined by claims at the conclusion hereo In the drawings:

Figure 1 is an elevation View of the entrance end of the device; I

Fig. 2 is a section taken on the line 2-2 of Fig. 1;

Fig. 3 is a section taken on the line 3-3 of Fig. 1; V

Fig. 4 is a sectiontaken on the line 4-4 of Fig. 3;

v Fig. 5 is a section similar to Fig. 4 showing the outlet end of the device; and

Fig. 6 is a section taken on the line 6-6 Of 5- Tn general the apparatus comprises, in combination with a furnace A, a drying chamber B, means for conducting vwarm air through said chamber,-means for conducting the material to be dried through said chamber, and conduit C for conducting the waste products from the furnace beneath and fipeeiflcation of Letters Fatent.

, Patented Apr.3,,1l9f?.

Application filed April 17, 1916f Serial No. 91,554.

around said chamber and thence to the chimney D.

The furnace A in the present instance is a muffle furnace of usual construction and the warm air radiating from the furnace is sucked through a hood 9 above the furnace and thence into a conduit 10 and a fan casng 11 by a fan (not shown) disposed therein and is thence delivered through a pipe 12 into the chamber or pit B. through conduits 13 and 14. The fan or blower with the conduits just described form the means for conducting the warm air from the furnace through the chamber B. The fan (not shown) is of ordinary construction andis driven by a suitable source of power such as a motor 15 whose drive pulley 16 is connected by a belt 16 to a drive pulley 17 on a shaft 18 which shaft is connected by a pul- .ley 19 and a belt 20 thereon to a pulley 21 on the fan shaft 22. The conduit 14 enters the chamber B at 23 at such an angle as to cause the air to flow or be driven lengthwise of the chamber and this is further facilitated by the conduit 13 which enters the chamber B at 24 at the end thereof and the air therein is directed lengthwise of the chamber. The passage of air through the entrance 24 is adapted to be controlled by a plate 25 hing-;- edly connected thereto.

The means for conducting the material to be dried through the-chamber comprises an endless conveyer which is driven from the motor 15 in a direction opposite to the air moving through the chamber. This endless conveyer in the present instance comprises endless spaced apart chains 26 slidably guided and held along the length by guide strips 27' and running over notched wheels 28 on shafts 29, the cross links of said chains engaging in the notches in said wheels during their passage thereover and thus forming a driving connection. One of the shafts 29 carries a gear 30 thereon which is in mesh with a gear 31 on a shaft 32, Figs. 1

and 2. The shaft 32 carries a worm wheel 33 which meshes with a worm 34 mounted on a shaft 35. The shaft 35 carries a pulley 36 which is connected to a pulley 37 on the shaft 18 by a belt 38 and thus the conveyer is driven through the motor, the motor having a driving connection between it and the shaft 18 as previously described. The chains 26 are provided with a plurality of hangers 39 having hanger books 40 and hanger rods into thechamber'and is spaced apart a short distance fromthe side walls thereof to allow-the hanger rods of the conveyer to pass therebetween but is designed to confine the heat in the chamber as much as possible and form an insulated cover therefor. The ;bedried therethrough in a direction oppotop of the chamber and the covering 44 is covered by removable plates'46.

The conduit C forconducting the waste roducts from the furnace beneathand around the chamber is formed with fire brick Walls 47 and bottom 48 within which the chamber is carried and supported by Mack ets49 and'bricksupports 50. The walls of thechamber B form the inner walls of theconduit and the products of combustion pass from the furnace A through the conduit 51,

2.5 D-to control the passage of waste gas to the chimney. It will be noted that the conduit C extends up the sides of" the chamber B ,slightl above the actual heated space withback of the air inlet 14,

' hangers of the endless conveyer and is 7 moved from the outlet of the chamber to the conduit C, conduit 52 to the chimney flue D, a slide plate .53 beingmounted at the opening between the conduit 52 and the flue in sai chamber.

. The endless conveyers for the articles are arranged so as to conduct the hangers through the drying chamber, the hangers dipping into the chamberat its outlet end 54 through an ope in a flue 55 and coming out'of the chain r at an opening 56 The operation of the device in brief is as follows} Thematerial to be dried is placed on the entranceend thereof and through the pit on the operation of the conveyer. During this travel of the material through the chamberthe warm air is delivered to the chamber by the fan and moves down the chamber in an opposite direction from the advancing. material. The insulated covering for the chamber serves to retain the heat within the. chamber and the air in said chamber is further heated by the waste gases passing. beneath and around the sides of the chambe The invention thus exemplifies a drying apparatus. in-which the material is passed through a d g chamber and dried during its passage, t erethrough. 7

What I claim as my invention is:

1. In a drying sipparatus, the combination, with a furnace, o a drying chamber, means I for conducting heated air throu h said chamber, and a conveyer running or por-' tions of its length above and within said chamber forconducting the material to be.

dried through said chamber in a direction opposite from that of the heated air passing therethrough.

2. In a drying apparatus, the combination, with a furnace, of a drying chamber, means for conductin heated air through said chamber, anien ess conveyer running for a portion of its length above said cham- -ber and for a portion of its length within said chamber and carrying the material to siteto that of the heated air passing there-.

through, and a conduit surrounding the sides and bottom of said chamber for conducting the products of combustion from the furnace to the chimney to heat said drying chamber.

ber, means for passing air through said chamber from the front to the rear end thereof, means for conducting material through said chamber from the rear to the front end thereof, and means for conducting the waste gases from the furnace through said heat conducting conduit.

4.- In a drying apparatus, the combination, with a furnace, of a pit disposed adjacent thereto provided with fire brick wal a conduit disposed within said pit an spaced from said walls to form a drying chamber and waste furnace-gas conduit, a

- heat-insulating covering for said drying chamber, 'a hood over said furnace, a conduit connecting said hood with the front portion of the it, a fanwithin said conduit for deliverlng the heated air to the pit and driving it through said drying chamber, an endless conveyer running for a portion of itsvlengthin said drying chamber and carrying the material to be dried therethrough in a direction opposite to that of the heated air passing through the drying chamber, and a conduit connecting the combustion chamber of the furnace with the waste furnace-gas conduit.

5. In a -d ing apparatus, the combination with a nace, of a drying chamber, means for heating the outside of the chamber by the products of combustion from the furnace, a conveyer traversing the le h of the chamber for carrying the materia to be dried therethrough and traversing the length of the chamber above the same for permitting the placing of articles to be dried thereon, and means for conducting heated air through the chamber in an opposite direction from that inwhich the material is carried.

6. In a drying apparatus, the combination, with a furnace, of an open pit, a conduit forming a drying chamber disposed Within the pit and covering its opening and spaced therefrom to form a conduit for conducting Waste gases from the furna e to heat said drying chamber, an insulated covering for said drying chamber, a conveyer for transporting articles to be dried through the chamber from a position Without the same, and means for conducting heated air through said drying chamber in a direction opposite to that of the movement of the com'eyer.

In testimony whereof, I afiix my signature. 1

' CHARLES H. BENEDICT. 

